With just about every other app getting the iOS 5 treatment, it isn’t that surprising that Apple just dropped the updated Xcode 4.2 in the Mac App Store with SDKs for iOS 5 and Mac OS X 10.7. You can also grab it from the Apple Developer site, if you prefer.  Full release notes after the break.

Earlier today Apple updated their iMovie, Remote, and Find My iPhone apps, and released updated versions of Pages, Numbers, Keynote. They also released a new iTunes Movie Trailers app and made their new Cards app available for download.

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What’s New in Version 4.2

– Includes SDKs for Mac OS X 10.7 Lion and iOS 5 – Storyboards let you design multiple iOS screens, and define the segues among them – Automatic Reference Counting (ARC) saves you from manually managing retain/release – iCloud entitlements are automatically enabled for Mac and iOS apps – OpenGL ES Debugger graphically analyzes your OpenGL scene directly within the IDE – Apple LLVM compiler supports C++11 features and the LLVM libc++ standard library – Older iOS Simulators and device debugging symbols are downloaded on-demand

Enhancements and fixes in previous Xcode updates:

– Interface Builder support for Auto Layout and new Aqua controls such as NSPopover – Full screen support in workspace, project, and organizer windows – Project editor can validate and resolve out of date build settings – Behaviors can be customized and assigned to unique key bindings – Source control enhancements to pushing, pulling, and management of remote servers – Assistant editor support for display of generated assembly and preprocessed output – Additional bug fixes and stability improvements

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